Bitcoin XT nodes are outnumbered ~ 11 to 1 by bitocoin core nodes and are ~8% of total.
The number of XT nodes seems to have increased shortly after a
scandal involving someone attempting to fake an email pretending to be satoshi1. r/bitcoin currently seems to be infuriated by the moderator tactics enforced in the subreddit. Snapshot of what the subreddit currently looks like
here.
1:
Theymos on Reddit added his view on the incident of the email. Maybe it's still unclear if it's genuine.
Tools used:
http://xtnodes.com/https://getaddr.bitnodes.io/
Legacy text from June 12:
That's just
one or two weeks before Gavin submits the block size increase update. Meanwhile bitcoin core nodes have even increased after Mike's statement on June 8th from ~5900 to ~6040 today.
Full block size debate video:
https://www.youtube.com/watch?v=8JmvkyQyD8w